OIL AND BROMOIL 309 
Fig. 8, or zig-zag lines as in B. While rubbing, the paper 
should be held firmly down with the other hand close to the 
tool. It is preferable to use a normal relief and a soft ink 
rather than a hard one and high relief. When two transfers 
are to be made on the same paper it is advisable to dust the 
Fig. 8 
first with talcum powder. Care must be taken in fitting the 
paper on the registration pins; one should be fitted first into 
the hole and a cork slipped over it to prevent the paper slip- 
ping off and then the other fitted into place. In using this 
transfer process for three-colour work care must be taken to 
keep everything at as even a temperature as possible. It is 
advisable also to mark around two corners of the bromoil 
with pencil lines, which with the pins facilitates registration. 
A sheet of thin celluloid should be placed over the print and 
the outlines of a few prominent objects traced on the cellu- 
